This is my second pregnancy. When I was pregnant with my first child, at about 24 weeks I went to my GP with leg cramps and she sent me to hospital for check ups. It was there that I found out that I had a blood clot behind my right leg. I was given injections every day until my child was born and then on tablets for six months afterwards(I was only 18 at the time). Now in my second pregnancy 4 years later and I am so worried, my platelets are already high at only 12 weeks, and I am basically waiting for something to go wrong.